Structural iron form



No Model.)

T. 8. WHITE. STRUCTURAL IRON FORM. No. 496,465. Patented May 2,-1893.

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TIMOTHY SIDNEY WHITE, OF NEW BRIGHTON, PENNSYLVANIA.

STRUCTURAL IRON FORM.

SPECIFICATION forming part of Letters Patent No. 496,465, dated May 2,1893.

Application filed February 20,1893. Serial No. 463,048. (No model.)

To all whom it may concern.-

Be it known thatl, TIMOTHY SIDNEY WHITE, a citizen of the United States,residing at New Brighton, in the county of Beaver, in the State ofPennsylvania, have invented new anduseful Improvements in StructuralIron Forms; and Ido hereby declare that the following is a full, clear,and exact description of the invention,such as will enable othersskilled in the art to which it appertains to use the same.

Ordinary rolled structural units are of various forms in cross section,according as they are to be used for columns, beams, &c.,

and they are commonly united by rivets to form the different structuralmembers for which they are intended. They usually consist of a centralbody or web, secondary webs extending in the same or a differentdirection from the margins, respectively, of the central web, andsometimes one or two uniting flanges making an angle with the secondaryweb or webs, the whole being formed integrally. In application, SerialNo. 433,651, filed May 20, 1892, allowed October 7, 1892, Ihavedescribed a unit composed of a plane central web having two unitingflanges connected to its margins, respectively, by oppositely extendingsecondary webs making an angle with both the central web and theconnected flange. Such forms may be rolled with great facility and theyreadily lend themselves to the formation of members that have heretoforehad no common unit, or that have been made up by uniting at considerablecost a greater number of units than are now required, or have beenformed from units that were individually difficult to roll; and further,the use of the novel units is not confined to forms heretofore common,but they may be employed to form members of various forms never beforeused, so far as I am aware.

The present invention, as will appear, relates to forms andfeatures notset forth in said application.

In the accompanying drawings,-Figure 1 shows the principal unit in crosssection.- Fig. 2 shows the same unit combined with a like unit to form astructural member. Fig. 3 shows a more complex member formed by addingdissimilar parts to the two units of Fig. 2. Fig. 4 shows a still morecomplex member formed by adding to the member of Fig. 3.

Figs. 5 and 6 illustrate slight modifications in the manner ofconnecting the principal units of the members.

Inall the figures the principal unit consists of a plane central web, A,of uniform width, having at its opposite edges oppositely extending,plane, secondary webs, B, one of which is provided at its outer edgewith an integral flange, (3, approximately parallel to the main Web.When a perfectly balanced section is required, the flangeless web ismade thicker than the remainder of the unit. To form a column, beam, orthe like, two of the units are rigidly joined by bringing the twoflanges together in registering position (Fig. 2) and uniting them byrivets, bolts, or any other suitable means. Where greater strength isdesired, a plate or web D is placed between the two flanges in'positionto bisect the space between the two main webs, and the three are thenunited as before. This additional web preferably has at its free marginone or two flanges D that lie in the plane of the secondard webs B. andone or both such flanges may be made integral with the plate or may becommon angle irons secured to the plates margin by such means as areemployed in joining the principal units. In case still greater strengthis required it may be readily obtained without materially increasing thesize of the member, by securing to the webs B and the flanges D a plateF, as indicated in Fig. 4.

When the member is intended to lie in such position that it would form atrough which might retain water, to the injury of the work, the unitingflanges are separated by small thimbles 0r washers G, encircling therivets between the flanges as shown in Fig. 5. And in the forms of Figs.2,3, 5 lateral yielding of the units may be guarded against bypreferably cast separators H against the ends of which the Webs aredrawn by bolts 0r rivets I, inserted at suitable intervals. Adding tothe primary unit a second flangelike thefirst but upon the opposite sideof the unit, as in the unit described in my said application, Serial No.433,651, would not in any way interfere with the addition of the otherparts, but for certain uses the presence of such second flange isundesirable and I therefore wish in addition to claims not dependingupon the presence or absence of such flange to protect this specificform.

Having now fully described my invention, what I claim is 1. An integralrolled iron unit consisting of a plane central web having at itsopposite margins, respectively, oppositely extending secondary webs oneonly of which is provided with a flange for uniting the unit to otherunits.

2. The combination with a rolled iron unit consisting of a primarycentral web having at its margins oppositely extending secondary Websone of which is provided with a flange, of a second unit like the firsthaving its secondary webs in the plane of the secondary webs of thefirst and its flange registering with and rigidly connected to theflange of the first.

3. The combination with a unit consisting of a plane central web havingat its edges oppositely extending secondary webs one of which isprovided with a flange, of a like unit oppositely turned, a plate lyingbetween the two registering flanges and bisecting the space between theprimary webs, and means for rigidly uniting the two flanges and theinterposed plate.

4. The combination with the two like units each consisting of a centralweb having at its edges oppositely extending secondary webs, oneprovided with a flange, of means for rigidly uniting the flanges, and aplate rigidly secured to, and spanning the space between, the secondarywebs upon the side opposite said flanges.

5. The combination with the unit consisting of the central web having atits edges oppositely extending secondary webs, one provided with auniting flange, of a like unit having its flange registering with, andits secondary webs in the planes of, like parts of the first,

.the flanged plate lying between said flanges and bisecting the spacebetween the main webs, and the plate spanning said space and rigidlyfixed to the lower secondary webs and to the flange or flanges of saidflanged plate.

TIMOTHY SIDNEY WHITE.

\Vitnesses:

F. DEG-Nan, CHAS. F. BOND.

